Awesome video. One day I hope to get a lathe and become a maker. These videos are very interesting. I am not the greatest at math and physics stumps me usually as far as the numbers, but I tend to understand the concepts and love watching these types of videos. Please make more if there are other things you can talk about. Metalworking, physics, etc intrigue me greatly.
Torque(t)=moment of inertia(I) x angular acceleration(alpha) If you are allowed to flick(spin) the top repeatedly, you can give a heavier top with a larger radius much more kinetic energy at much lower speeds, but it seems like you are limiting things to a single spin(flick)
I just ordered my first top. It’s saying it should be here this Friday and I’m pretty excited. It’s an Billet spin EON $81 shipped . I really liked the singularity looks better but they spend time is wet drove me to the eon. I look forward to watching more of your videos and hopefully buy another top from you that’s more than a pretty category. I’m kind of noticing a trend on your Facebook page and it’s showing way more pens than tops these days so I am wondering if the top momentum is dying off when I’m just now getting into it tops myself perhaps😔
You are a very talented artisan, simply beautiful work. I would guess you may be a jewler or a watch maker. Your average Joe just doesn't do this kind of work. You are the best I've seen. Thank you for sharing.
Great video and explanation. But what about the converse on the grip size? You described testing the grip "2 hairs" smaller, and spun 2 minutes less. What if you make the grip 4 hairs wider! Another observation that follows, the ideal grip might vary for different people, different fingers. Thanks again for the video communications.
I am assuming the weights and diameter you talked about are sort of a company secret, but i have started to make some tops at home just out of aluminum and i was wondering if you would be able to give me some sort of idea about what diameter i should go for depending on how heavy it is thanks
Question: If changing it by one fraction smaller made it spin slower, are you sure making it the same fraction larger won't lead to a better spin time? I get that you might have already tuned it that closely, but are you sure? It sounds like a test begging to be done. Also why is Titanium desirable (despite the uniformity issues)? Is hardness also helpful?
are the groves and carvings you've done on there significant? also how do your spin times compare to the foreverspin's "master" spinner the tungsten one?
I make tops that focus on looking cool and then I make tops that focus on spin time. The Nexus top spins over 20 minutes quite easily which is substantially longer than the FS. Most people start out in the hobby caring about spin time but then collect tops for looks over spin time
cool. your top are quite nice looking. I believe I can put a crap load of energy into a spin.. when you try to make long spins are we talking about a violent spin while trying to also make it precise? I hope I'm not bothering, cause I do want to buy one. Thanks for response it helps!
I'm thinking that although the physics of a top will determine many things, so will the person spinning it. Here is my theory but tell me if I'm wrong.... Balancing a heavy, high centre of gravity top for example which a person might struggle to spin would be fine if a machine was able to spin it faster. So changing that ten thousandths of an inch may have a negative effect on your relative spin time due to your specific physical attributes but another person might be able to achieve a higher rotation speed with the thinner shaft and achieve the same or better spin time as you using a thicker shaft. My point is that a "perfect" top is not possible if the criteria for the top is that every person can manually get the same spin times.
The biggest consumer of the energy of top rotation is often.... gravity. It takes energy to keep a top upright when gravity is always pulling it down. It stays upright if it's spinning fast enough because rotational momentum creates a force at right angle to the rotation, which vector is pointed up, suspending the top. But using that force against gravity takes energy, which comes from the speed of rotation. Eventually the top slows enough that the top collapses. For that reason, a top with a lower center of gravity will spin longer than the same top with a high center of gravity, because it takes more energy to keep the high center top upright, and therefore the high center top uses up rotation speed faster.
Technically, heavier tops DO spin longer. This comes down to physics. If you had the exact same design, dimensions and friction coefficient, then the heavier material will spin longer so long as the centrifugal proportions are the same. I have made spinning tops that weigh far less than BilletSpin tops and they spin over 20 minutes.
By the way, reducing weight in the stem will not reduce spin time in terms of actual physical characteristics. This could be true for you, but that is likely due to your subjective finger spin skill and technique.
A standard top spun with the fingers is limited by the strength and skill of the individual overcoming inertia. This is why I invented Momentum, which allows you to essentially transfer more energy into the spin while allowing a great deal of control. I'm working on a design that spins 30+ minutes while only weighing a few more grams, but in reality, mass on the outer circumference is always better for longer spins. Physics is pretty cool :)
After watching this video, I will now proceed to cancel my order for a custom top made of uranium.
Im loving all this math talk. PHYSICS!!
Awesome video. One day I hope to get a lathe and become a maker. These videos are very interesting. I am not the greatest at math and physics stumps me usually as far as the numbers, but I tend to understand the concepts and love watching these types of videos.
Please make more if there are other things you can talk about. Metalworking, physics, etc intrigue me greatly.
Cool video. This is what drove me to buy one of your tops. The art of it but also the physics that go into it is just really neat.
This is such an underrated video! What a good explanation of an involved concept. Good on you
Excellent video and explanation. Well done.
Torque(t)=moment of inertia(I) x angular acceleration(alpha)
If you are allowed to flick(spin) the top repeatedly, you can give a heavier top with a larger radius much more kinetic energy at much lower speeds, but it seems like you are limiting things to a single spin(flick)
I just ordered my first top. It’s saying it should be here this Friday and I’m pretty excited. It’s an Billet spin EON $81 shipped .
I really liked the singularity looks better but they spend time is wet drove me to the eon.
I look forward to watching more of your videos and hopefully buy another top from you that’s more than a pretty category.
I’m kind of noticing a trend on your Facebook page and it’s showing way more pens than tops these days so I am wondering if the top momentum is dying off when I’m just now getting into it tops myself perhaps😔
Thanks for the great video and insight! You communicated great! :]
That's true I one time got a 15 minute spin with a Prometheus lights Lambda top which only weighs 25 grams.
I’m spinning the lambda as I read this... I’m getting 15min spins tonight... never got these numbers before
Apps of those because I love your videos when those stops spin and also I love your videos
You are a very talented artisan, simply beautiful work. I would guess you may be a jewler or a watch maker. Your average Joe just doesn't do this kind of work. You are the best I've seen. Thank you for sharing.
Great video and explanation. But what about the converse on the grip size? You described testing the grip "2 hairs" smaller, and spun 2 minutes less. What if you make the grip 4 hairs wider! Another observation that follows, the ideal grip might vary for different people, different fingers. Thanks again for the video communications.
what magnification mirror do you suggest? I'm a pretty good at getting long times, but not a pro. Thanks!
I am assuming the weights and diameter you talked about are sort of a company secret, but i have started to make some tops at home just out of aluminum and i was wondering if you would be able to give me some sort of idea about what diameter i should go for depending on how heavy it is
thanks
Question: If changing it by one fraction smaller made it spin slower, are you sure making it the same fraction larger won't lead to a better spin time? I get that you might have already tuned it that closely, but are you sure? It sounds like a test begging to be done. Also why is Titanium desirable (despite the uniformity issues)? Is hardness also helpful?
Do you sell tops of those because I love your videos
I want to see the stainless eon spin!
Are you coming back to youtube?
are the groves and carvings you've done on there significant? also how do your spin times compare to the foreverspin's "master" spinner the tungsten one?
I make tops that focus on looking cool and then I make tops that focus on spin time. The Nexus top spins over 20 minutes quite easily which is substantially longer than the FS. Most people start out in the hobby caring about spin time but then collect tops for looks over spin time
cool. your top are quite nice looking. I believe I can put a crap load of energy into a spin.. when you try to make long spins are we talking about a violent spin while trying to also make it precise? I hope I'm not bothering, cause I do want to buy one. Thanks for response it helps!
If you are on Facebook, join the billetspin Facebook group! You can get a better understanding there for sure!
I'm thinking that although the physics of a top will determine many things, so will the person spinning it. Here is my theory but tell me if I'm wrong.... Balancing a heavy, high centre of gravity top for example which a person might struggle to spin would be fine if a machine was able to spin it faster. So changing that ten thousandths of an inch may have a negative effect on your relative spin time due to your specific physical attributes but another person might be able to achieve a higher rotation speed with the thinner shaft and achieve the same or better spin time as you using a thicker shaft. My point is that a "perfect" top is not possible if the criteria for the top is that every person can manually get the same spin times.
The biggest consumer of the energy of top rotation is often.... gravity.
It takes energy to keep a top upright when gravity is always pulling it down. It stays upright if it's spinning fast enough because rotational momentum creates a force at right angle to the rotation, which vector is pointed up, suspending the top. But using that force against gravity takes energy, which comes from the speed of rotation.
Eventually the top slows enough that the top collapses.
For that reason, a top with a lower center of gravity will spin longer than the same top with a high center of gravity, because it takes more energy to keep the high center top upright, and therefore the high center top uses up rotation speed faster.
Technically, heavier tops DO spin longer. This comes down to physics. If you had the exact same design, dimensions and friction coefficient, then the heavier material will spin longer so long as the centrifugal proportions are the same. I have made spinning tops that weigh far less than BilletSpin tops and they spin over 20 minutes.
By the way, reducing weight in the stem will not reduce spin time in terms of actual physical characteristics. This could be true for you, but that is likely due to your subjective finger spin skill and technique.
That is only true IF you can get them spinning fast which was the point I as making in the video
Weight reduction in the stem will make the top spin longer as I mentioned
when it takes you 8 months to respond XD
A standard top spun with the fingers is limited by the strength and skill of the individual overcoming inertia. This is why I invented Momentum, which allows you to essentially transfer more energy into the spin while allowing a great deal of control. I'm working on a design that spins 30+ minutes while only weighing a few more grams, but in reality, mass on the outer circumference is always better for longer spins. Physics is pretty cool :)